Storage unit



FIG. 1 is a perspective view of a first embodiment thereof;

FIG. 2 is a top plan view of a first embodiment thereof;

FIG. 3 is a side elevational view of a first embodiment thereof;

FIG. 4 is a rear elevational view of a first embodiment thereof;

FIG. 5 is a bottom plan view of a first embodiment thereof; and,

FIG. 6 is a perspective view of a second embodiment thereof showing the top front panels in an open condition. 

The ornamental design for a storage unit, as shown and described. 